CLAUDIO JOSE DA ROCHA
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Resumo IPEN-doc 22476 Easily hydridable nanostructured TiFe from ball milled TiHsub(2) and Fe powders mixtures2015 - FALCAO, R.B.; DAMMANN, E.D.C.C.; ROCHA, C.J.; ICHIKAWA, R.U.; MARTINEZ, L.G.; DURAZZO, L.G.; LEAL NETO, R.M.Artigo IPEN-doc 20547 Synthesis of TiFe compound from ball milled TiHsub(2) and Fe powders mixtures2014 - FALCAO, RAILSON B.; DAMMANN, EDGAR D.C.C.; ROCHA, CLAUDIO J. da; ICHIKAWA, RODRIGO U.; DURAZZO, MICHELANGELO; MARTINEZ, LUIS G.; LEAL NETO, RICARDO M.TiFe compound was produced by high-energy ball milling of TiH2 and Fe powders, followed by heating under vacuum. TiH2 was used instead of Ti in order to avoid the strong particles adhesion to grinding balls and vial walls. Mixtures of TiH2 and Fe powders were drymilled in a planetary mill for times ranging from 5 to 40 hours. The amount of sample, number and diameter of the balls were kept constant in all experiments. After milling, samples were heated under dynamic high-vacuum for the synthesis reaction. As-milled and heat-treated materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential thermal analysis (DTA). The mean crystallite sizes and microstrains were determined by XRD line profile analysis using the Warren-Averbach method. As-milled materials presented only Fe and TiH2 phases. Nanostructured TiFe compound was formed after heat treatment. TiH2 was effective for providing low adherence of the powders during milling.Resumo IPEN-doc 16657 An investigation on the mechanical alloying of TiF e compound by high-energy ball milling2009 - FALCÃO, R.B.; DAMMANN, E.D.C.C.; ROCHA, C.J.; LEAL NETO, R.M.Artigo IPEN-doc 15897 Obtencao do composto TiFe a partir da moagem de alta energia de misturas Ti+Fe e TiHsub(2)+Fe2010 - FALCAO, R.B.; DAMMANN, E.D.C.C.; ROCHA, C.J.; LEAL NETO, R.M.Artigo IPEN-doc 15677 An investigation on the high-energy ball milling of iron-titanium powder mixtures without process control agents2010 - LEAL NETO, RICARDO M.; FALCAO, RAILSON B.; DAMMANN, EDGAR D.C.C.; ROCHA, CLAUDIO J. daArtigo IPEN-doc 18397 Elaboração mecânica do composto TiFe a partir dos pós de TiHsub(2) e de Fe2012 - FALCÃO, R.B.; DAMMANN, E.D.C.C.; ROCHA, C.J.; LEAL NETO, R.M.